<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>子元素是否换行</title>
    <style>
        div{
            display: flex;
            width: 500px;
            height: 400px;
            background-color: pink;
            /* flex-wrap 默认情况下子元素是不换行的 ，如果 放不下，就将子元素缩小放在父盒子当中 */
            /* flex-wrap: nowrap; */
            flex-wrap: wrap;
        }
        span{
            width: 150px;
            height: 100px;
            background-color: purple;
            margin: 10px;
        }
    </style>
</head>
<body>
    <div>
        <span>1</span>
        <span>2</span>
        <span>3</span>
        <span>4</span>
        <span>5</span>
    </div>
</body>
</html>